package com.hspedu.collection_;

import java.util.HashSet;
import java.util.Set;

/**
 * @author 谷其昊
 * @version 1.0
 * @date 2022/2/7
 * @time 19:45
 */
public class SetMethod {
    public static void main(String[] args) {
        Set set = new HashSet();
        System.out.println(set);

        set = null;
        System.out.println(set);
    }
}
